diff options
| -rw-r--r-- | drivers/scsi/eata_pio.c | 88 |
1 files changed, 39 insertions, 49 deletions
diff --git a/drivers/scsi/eata_pio.c b/drivers/scsi/eata_pio.c index f33ad01064a9..73260e590f22 100644 --- a/drivers/scsi/eata_pio.c +++ b/drivers/scsi/eata_pio.c @@ -107,59 +107,44 @@ static struct scsi_host_template driver_template; static int eata_pio_proc_info(struct Scsi_Host *shost, char *buffer, char **start, off_t offset, int length, int rw) { - static u8 buff[512]; - int size, len = 0; - off_t begin = 0, pos = 0; + int len = 0; + off_t begin = 0, pos = 0; - if (rw) - return -ENOSYS; - if (offset == 0) - memset(buff, 0, sizeof(buff)); + if (rw) + return -ENOSYS; - size = sprintf(buffer+len, "EATA (Extended Attachment) PIO driver version: " + len += sprintf(buffer+len, "EATA (Extended Attachment) PIO driver version: " "%d.%d%s\n",VER_MAJOR, VER_MINOR, VER_SUB); - len += size; pos = begin + len; - size = sprintf(buffer + len, "queued commands: %10ld\n" + len += sprintf(buffer + len, "queued commands: %10ld\n" "processed interrupts:%10ld\n", queue_counter, int_counter); - len += size; pos = begin + len; - - size = sprintf(buffer + len, "\nscsi%-2d: HBA %.10s\n", + len += sprintf(buffer + len, "\nscsi%-2d: HBA %.10s\n", shost->host_no, SD(shost)->name); - len += size; - pos = begin + len; - size = sprintf(buffer + len, "Firmware revision: v%s\n", + len += sprintf(buffer + len, "Firmware revision: v%s\n", SD(shost)->revision); - len += size; - pos = begin + len; - size = sprintf(buffer + len, "IO: PIO\n"); - len += size; - pos = begin + len; - size = sprintf(buffer + len, "Base IO : %#.4x\n", (u32) shost->base); - len += size; - pos = begin + len; - size = sprintf(buffer + len, "Host Bus: %s\n", + len += sprintf(buffer + len, "IO: PIO\n"); + len += sprintf(buffer + len, "Base IO : %#.4x\n", (u32) shost->base); + len += sprintf(buffer + len, "Host Bus: %s\n", (SD(shost)->bustype == 'P')?"PCI ": (SD(shost)->bustype == 'E')?"EISA":"ISA "); - len += size; - pos = begin + len; + pos = begin + len; - if (pos < offset) { - len = 0; - begin = pos; - } - if (pos > offset + length) - goto stop_output; + if (pos < offset) { + len = 0; + begin = pos; + } + if (pos > offset + length) + goto stop_output; - stop_output: - DBG(DBG_PROC, printk("2pos: %ld offset: %ld len: %d\n", pos, offset, len)); - *start=buffer+(offset-begin); /* Start of wanted data */ - len-=(offset-begin); /* Start slop */ - if(len>length) - len = length; /* Ending slop */ - DBG(DBG_PROC, printk("3pos: %ld offset: %ld len: %d\n", pos, offset, len)); +stop_output: + DBG(DBG_PROC, printk("2pos: %ld offset: %ld len: %d\n", pos, offset, len)); + *start = buffer + (offset - begin); /* Start of wanted data */ + len -= (offset - begin); /* Start slop */ + if (len > length) + len = length; /* Ending slop */ + DBG(DBG_PROC, printk("3pos: %ld offset: %ld len: %d\n", pos, offset, len)); - return (len); + return len; } static int eata_pio_release(struct Scsi_Host *sh) @@ -438,7 +423,7 @@ static int eata_pio_queue(struct scsi_cmnd *cmd, "returning DID_BUS_BUSY, done.\n", cmd->pid); done(cmd); cp->status = FREE; - return (0); + return 0; } /* FIXME: timeout */ while (!(inb(base + HA_RSTATUS) & HA_SDRQ)) @@ -452,7 +437,7 @@ static int eata_pio_queue(struct scsi_cmnd *cmd, "Queued base %#.4lx pid: %ld " "slot %d irq %d\n", sh->base, cmd->pid, y, sh->irq)); - return (0); + return 0; } static int eata_pio_abort(struct scsi_cmnd *cmd) @@ -589,23 +574,28 @@ static char *get_pio_board_data(unsigned long base, unsigned int irq, unsigned i cp.cp_cdb[5] = 0; if (eata_pio_send_command(base, EATA_CMD_PIO_SEND_CP)) - return (NULL); - while (!(inb(base + HA_RSTATUS) & HA_SDRQ)); + return NULL; + + while (!(inb(base + HA_RSTATUS) & HA_SDRQ)) + cpu_relax(); + outsw(base + HA_RDATA, &cp, cplen); outb(EATA_CMD_PIO_TRUNC, base + HA_WCOMMAND); for (z = 0; z < cppadlen; z++) outw(0, base + HA_RDATA); - while (inb(base + HA_RSTATUS) & HA_SBUSY); + while (inb(base + HA_RSTATUS) & HA_SBUSY) + cpu_relax(); + if (inb(base + HA_RSTATUS) & HA_SERROR) - return (NULL); + return NULL; else if (!(inb(base + HA_RSTATUS) & HA_SDRQ)) - return (NULL); + return NULL; else { insw(base + HA_RDATA, &buff, 127); while (inb(base + HA_RSTATUS) & HA_SDRQ) inw(base + HA_RDATA); - return (buff); + return buff; } } |